/* ===== 儿童专注力训练营 · 黑金高奢主题 =====
   配色为规定色值，定义为 CSS 变量并贯穿全站。
   气质：近黑底 + 细光描边 + 微光泽渐变 + 衬线大字 + 克制高光 */
:root{
  --c-primary:#5ad8c0;
  --c-secondary:#4cc8c1;
  --c-accent:#5f8fe7;
  --c-bg:#0e1514;
  --c-surface:#1a2322;
  --c-surface-2:#202c2a;
  --c-text:#eef2f1;
  --c-muted:#98aeaa;
  --c-border:#30403d;
  --radius:6px;
  --font-head:'Noto Serif SC','Songti SC',Georgia,'Times New Roman',serif;
  --font-body:system-ui,-apple-system,'PingFang SC','Microsoft YaHei','Segoe UI',sans-serif;
  --shadow:0 14px 40px rgba(0,0,0,.38);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;padding:0;
  font-family:var(--font-body);
  color:var(--c-text);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  background:
    radial-gradient(1100px 560px at 50% -12%, rgba(90,216,192,.07), transparent 62%),
    radial-gradient(900px 520px at 96% 6%, rgba(95,143,231,.055), transparent 58%),
    radial-gradient(700px 400px at 0% 60%, rgba(76,200,193,.04), transparent 55%),
    var(--c-bg);
  min-height:100vh;
}
a{color:var(--c-accent)}
img{max-width:100%}

/* 顶部导航 */
.site-nav{position:sticky;top:0;z-index:60;background:rgba(14,21,20,.86);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--c-border)}
.nav-inner{max-width:1120px;margin:0 auto;padding:0 20px;height:64px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand{font-family:var(--font-head);font-weight:700;letter-spacing:.14em;font-size:17px;color:var(--c-text);text-decoration:none;display:flex;align-items:center;gap:11px;white-space:nowrap}
.brand .brand-dot{width:11px;height:11px;border-radius:50%;background:linear-gradient(135deg,var(--c-primary),var(--c-accent));box-shadow:0 0 14px rgba(90,216,192,.7);position:relative;flex:none}
.brand .brand-dot::after{content:"";position:absolute;inset:-4px;border-radius:50%;border:1px solid rgba(90,216,192,.4)}
.nav-links{display:flex;gap:2px}
.nav-links a{color:var(--c-muted);text-decoration:none;padding:8px 15px;border-radius:var(--radius);font-size:14px;letter-spacing:.08em;position:relative;transition:color .25s}
.nav-links a:hover{color:var(--c-text)}
.nav-links a.active{color:var(--c-primary)}
.nav-links a.active::after{content:"";position:absolute;left:15px;right:15px;bottom:3px;height:1px;background:linear-gradient(90deg,var(--c-primary),var(--c-accent));box-shadow:0 0 8px rgba(90,216,192,.6)}

/* 通用 */
.section{max-width:1120px;margin:0 auto;padding:64px 20px}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;flex-wrap:wrap;gap:10px;margin-bottom:26px;padding-bottom:16px;border-bottom:1px solid var(--c-border)}
.sec-head h2{font-family:var(--font-head);font-size:26px;letter-spacing:.12em;margin:0;font-weight:800}
.sec-head p{color:var(--c-muted);font-size:13px;margin:0;letter-spacing:.03em}
.sec-num{font-family:var(--font-head);color:var(--c-primary);margin-right:8px;font-size:15px;opacity:.8}
.kicker{display:inline-flex;align-items:center;gap:12px;color:var(--c-primary);font-size:11px;letter-spacing:.4em;text-transform:uppercase;font-weight:600}
.kicker::before,.kicker::after{content:"";width:34px;height:1px;background:linear-gradient(90deg,transparent,var(--c-primary))}
.kicker::after{background:linear-gradient(90deg,var(--c-primary),transparent)}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid var(--c-border);background:var(--c-surface);color:var(--c-text);padding:12px 26px;border-radius:var(--radius);font-family:var(--font-body);font-size:15px;letter-spacing:.06em;cursor:pointer;text-decoration:none;transition:transform .22s,box-shadow .22s,border-color .22s,background .22s}
.btn:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:#425854}
.btn:active{transform:translateY(0)}
.btn-primary{background:linear-gradient(135deg,var(--c-primary),var(--c-accent));border:none;color:#0e1514;font-weight:700}
.btn-primary:hover{box-shadow:0 12px 34px rgba(90,216,192,.35);border-color:transparent}
.btn-ghost{background:transparent}

/* 卡片 */
.card{position:relative;background:linear-gradient(180deg,rgba(255,255,255,.025),transparent 34%),var(--c-surface);border:1px solid var(--c-border);border-radius:var(--radius);padding:28px;overflow:hidden;transition:transform .28s,border-color .28s,box-shadow .28s}
.card::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(90,216,192,.6),rgba(95,143,231,.6),transparent)}
.card:hover{transform:translateY(-5px);border-color:#405451;box-shadow:var(--shadow)}

/* 首页 Hero */
.hero{text-align:center;padding:76px 20px 30px}
.hero h1{font-family:var(--font-head);font-size:clamp(34px,6vw,62px);font-weight:900;letter-spacing:.16em;line-height:1.18;margin:20px 0 12px;background:linear-gradient(180deg,#ffffff,#cddcd8);-webkit-background-clip:text;background-clip:text;color:transparent;text-shadow:0 0 44px rgba(90,216,192,.16)}
.hero .lead{color:var(--c-muted);max-width:600px;margin:0 auto 32px;font-size:16px}
.hero-cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.hero-badges{display:flex;justify-content:center;gap:26px;flex-wrap:wrap;margin-top:40px;color:var(--c-muted);font-size:13px;letter-spacing:.06em}
.hero-badges span{display:inline-flex;align-items:center;gap:8px}
.hero-badges i{width:5px;height:5px;border-radius:50%;background:var(--c-primary);box-shadow:0 0 8px var(--c-primary)}

/* 年龄推荐面板 */
.age-panel{margin-top:52px;max-width:820px;text-align:left}
.age-panel h2{font-family:var(--font-head);font-size:21px;letter-spacing:.1em;margin:0 0 4px;font-weight:800}
.age-sub{color:var(--c-muted);font-size:13px;margin:0 0 22px}
.slider-row{display:flex;align-items:center;gap:18px}
.slider-row output{font-family:var(--font-head);font-size:30px;font-weight:800;color:var(--c-primary);min-width:56px;text-align:center;text-shadow:0 0 16px rgba(90,216,192,.5)}
input[type=range]{-webkit-appearance:none;appearance:none;flex:1;height:2px;background:linear-gradient(90deg,var(--c-primary) var(--val,50%),var(--c-border) var(--val,50%));border-radius:2px;outline:none;cursor:pointer}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:18px;height:18px;border-radius:50%;background:#0e1514;border:2px solid var(--c-primary);box-shadow:0 0 12px rgba(90,216,192,.55);transition:transform .2s}
input[type=range]::-webkit-slider-thumb:hover{transform:scale(1.15)}
input[type=range]::-moz-range-thumb{width:18px;height:18px;border-radius:50%;background:#0e1514;border:2px solid var(--c-primary);box-shadow:0 0 12px rgba(90,216,192,.55)}
.age-marks{display:flex;justify-content:space-between;margin:10px 0 20px;color:var(--c-muted);font-size:11px;letter-spacing:.05em}
.plan-box{margin-top:4px;padding:22px;border:1px solid rgba(90,216,192,.35);border-radius:var(--radius);background:linear-gradient(180deg,rgba(90,216,192,.06),rgba(95,143,231,.04));display:grid;gap:12px}
.plan-box .plan-title{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;margin-bottom:2px}
.plan-box .plan-title b{font-family:var(--font-head);font-size:17px;letter-spacing:.08em}
.plan-row{display:flex;justify-content:space-between;align-items:center;gap:14px;font-size:14px;padding-bottom:9px;border-bottom:1px dashed var(--c-border)}
.plan-row:last-of-type{border-bottom:none;padding-bottom:0}
.plan-row span{color:var(--c-muted)}
.plan-row b{font-weight:600}
.plan-tag{display:inline-block;padding:2px 12px;border:1px solid var(--c-primary);color:var(--c-primary);border-radius:20px;font-size:12px;letter-spacing:.1em}

/* 游戏卡片 */
.game-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(285px,1fr));gap:22px}
.game-card .icon{width:56px;height:56px;display:grid;place-items:center;border:1px solid var(--c-border);border-radius:var(--radius);font-size:26px;margin-bottom:18px;background:linear-gradient(135deg,rgba(90,216,192,.14),rgba(95,143,231,.1))}
.game-card h3{font-family:var(--font-head);font-size:19px;letter-spacing:.08em;margin:0 0 8px;font-weight:800}
.game-card p{color:var(--c-muted);font-size:14px;margin:0 0 16px;min-height:46px}
.game-meta{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:20px}
.tag{font-size:11px;letter-spacing:.08em;color:var(--c-muted);border:1px solid var(--c-border);padding:3px 10px;border-radius:20px}
.game-card .btn{width:100%}

/* 训练建议步骤 */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:22px;counter-reset:step}
.step{position:relative;padding:24px 22px}
.step::after{counter-increment:step;content:"0" counter(step);position:absolute;top:16px;right:20px;font-family:var(--font-head);font-size:34px;font-weight:900;color:rgba(90,216,192,.14)}
.step h3{font-family:var(--font-head);font-size:17px;letter-spacing:.06em;margin:0 0 8px}
.step p{color:var(--c-muted);font-size:13px;margin:0}

/* 页脚 */
.site-footer{margin-top:70px;border-top:1px solid var(--c-border);padding:36px 20px;text-align:center;color:var(--c-muted);font-size:13px}
.site-footer .fline{width:64px;height:1px;margin:0 auto 18px;background:linear-gradient(90deg,transparent,var(--c-primary),transparent)}
.site-footer .fnav{display:flex;justify-content:center;gap:22px;margin-bottom:10px;flex-wrap:wrap}
.site-footer .fnav a{color:var(--c-muted);text-decoration:none;font-size:13px}
.site-footer .fnav a:hover{color:var(--c-primary)}

/* ===== 游戏页 ===== */
.games-wrap{max-width:980px;margin:0 auto;padding:44px 20px 30px}
.games-title{text-align:center;margin-bottom:30px}
.games-title h1{font-family:var(--font-head);font-size:clamp(26px,4.5vw,40px);letter-spacing:.14em;margin:0 0 8px;font-weight:900}
.games-title p{color:var(--c-muted);margin:0}
.games-tabs{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-bottom:34px}
.games-tabs button{font-family:var(--font-body);font-size:15px;letter-spacing:.06em;padding:12px 24px;border:1px solid var(--c-border);background:var(--c-surface);color:var(--c-muted);border-radius:var(--radius);cursor:pointer;transition:.25s}
.games-tabs button:hover{color:var(--c-text);border-color:#425854}
.games-tabs button.active{background:linear-gradient(135deg,var(--c-primary),var(--c-accent));color:#0e1514;border-color:transparent;font-weight:700;box-shadow:0 8px 26px rgba(90,216,192,.3)}
.game-panel{display:none}
.game-panel.active{display:block;animation:fadeUp .45s ease}
@keyframes fadeUp{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}

.panel-head{text-align:center;margin-bottom:22px}
.panel-head h2{font-family:var(--font-head);font-size:22px;letter-spacing:.1em;margin:0 0 6px}
.panel-head p{color:var(--c-muted);font-size:14px;margin:0}
.panel-head .rule{display:inline-block;margin-top:10px;font-size:12px;color:var(--c-muted);border:1px solid var(--c-border);border-radius:20px;padding:4px 14px}

.canvas-wrap{position:relative;width:100%;max-width:680px;margin:0 auto;border:1px solid var(--c-border);border-radius:var(--radius);overflow:hidden;background:radial-gradient(560px 300px at 50% -10%,rgba(90,216,192,.06),transparent),var(--c-bg)}
canvas#vc{display:block;width:100%;height:auto;touch-action:none}
.hud{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;margin:18px 0 16px}
.hud .stat{flex:1;min-width:110px;text-align:center;background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--radius);padding:12px 8px}
.hud .stat .v{font-family:var(--font-head);font-size:24px;font-weight:800;color:var(--c-primary)}
.hud .stat .l{font-size:11px;color:var(--c-muted);letter-spacing:.12em;margin-top:2px}
.start-box{text-align:center;padding:34px 10px}
.start-box .btn{font-size:17px;padding:15px 40px}
.start-box .desc{color:var(--c-muted);font-size:14px;max-width:480px;margin:0 auto 22px}
.start-box .desc b{color:var(--c-text)}

.aud-stage{max-width:520px;margin:0 auto;text-align:center}
.aud-progress{color:var(--c-muted);font-size:13px;letter-spacing:.1em;margin-bottom:20px}
.aud-progress b{color:var(--c-primary);font-family:var(--font-head);font-size:18px}
.aud-sound-dot{width:76px;height:76px;margin:0 auto 20px;border-radius:50%;display:grid;place-items:center;border:1px solid var(--c-border);background:var(--c-surface);transition:.2s}
.aud-sound-dot.playing{border-color:var(--c-primary);animation:pulse 1s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(90,216,192,.4)}100%{box-shadow:0 0 0 26px rgba(90,216,192,0)}}
.aud-sound-dot svg{width:34px;height:34px;stroke:var(--c-muted)}
.aud-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin:14px 0 10px}
.aud-btns .btn{font-size:18px;padding:16px 34px}
.aud-feedback{min-height:26px;font-size:15px;letter-spacing:.05em}
.aud-feedback.ok{color:var(--c-primary)}
.aud-feedback.no{color:var(--c-accent)}
.aud-replay{margin-top:6px}
.aud-replay .btn{font-size:13px;padding:8px 18px}

.schulte-wrap{max-width:560px;margin:0 auto;text-align:center}
.schulte-grid{display:grid;gap:10px;max-width:400px;margin:14px auto}
.schulte-grid .cell{aspect-ratio:1;display:grid;place-items:center;font-family:var(--font-head);font-size:clamp(22px,5vw,30px);font-weight:700;border:1px solid var(--c-border);border-radius:var(--radius);background:var(--c-surface);color:var(--c-text);cursor:pointer;user-select:none;-webkit-user-select:none;transition:background .15s,transform .15s,border-color .15s,color .15s}
.schulte-grid .cell:hover{border-color:#425854}
.schulte-grid .cell.correct{background:rgba(90,216,192,.16);border-color:var(--c-primary);color:var(--c-primary);transform:scale(.95)}
.schulte-grid .cell.wrong{background:rgba(95,143,231,.18);border-color:var(--c-accent);color:var(--c-accent);animation:shake .3s}
@keyframes shake{0%,100%{transform:translateX(0)}25%{transform:translateX(-5px)}50%{transform:translateX(5px)}75%{transform:translateX(-4px)}}
.schulte-info{color:var(--c-muted);font-size:14px;min-height:24px;margin-top:6px}

.result{display:none;max-width:520px;margin:24px auto;text-align:center;padding:34px 26px}
.result.show{display:block;animation:fadeUp .4s ease}
.result .big{font-family:var(--font-head);font-size:52px;font-weight:900;line-height:1}
.result .big.good{color:var(--c-primary);text-shadow:0 0 26px rgba(90,216,192,.5)}
.result .big.mid{color:var(--c-secondary);text-shadow:0 0 26px rgba(76,200,193,.4)}
.result .big.again{color:var(--c-accent);text-shadow:0 0 26px rgba(95,143,231,.5)}
.result .rtitle{font-family:var(--font-head);font-size:21px;letter-spacing:.08em;margin:12px 0 6px}
.result .rmsg{color:var(--c-muted);font-size:14px;margin:0 0 8px}
.result .rmetric{display:inline-flex;gap:26px;margin:14px 0 22px;flex-wrap:wrap;justify-content:center}
.result .rmetric div{font-size:13px;color:var(--c-muted)}
.result .rmetric b{display:block;font-family:var(--font-head);font-size:24px;color:var(--c-text)}
.result .btn-row{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

/* ===== 报告页 ===== */
.report-wrap{max-width:1120px;margin:0 auto;padding:46px 20px 30px}
.report-title{text-align:center;margin-bottom:32px}
.report-title h1{font-family:var(--font-head);font-size:clamp(26px,4.5vw,40px);letter-spacing:.14em;margin:0 0 8px;font-weight:900}
.report-title p{color:var(--c-muted);margin:0}
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:16px;margin-bottom:26px}
.stat-tile{padding:22px}
.stat-tile .num{font-family:var(--font-head);font-size:34px;font-weight:900;color:var(--c-primary);line-height:1.1;text-shadow:0 0 18px rgba(90,216,192,.35)}
.stat-tile .lbl{color:var(--c-muted);font-size:12px;letter-spacing:.14em;margin-top:8px}
.chart-grid{display:grid;grid-template-columns:2fr 1fr;gap:20px}
@media(max-width:880px){.chart-grid{grid-template-columns:1fr}}
.chart-box{background:linear-gradient(180deg,rgba(255,255,255,.02),transparent 30%),var(--c-surface);border:1px solid var(--c-border);border-radius:var(--radius);padding:22px}
.chart-box h3{font-family:var(--font-head);font-size:18px;letter-spacing:.08em;margin:0 0 6px}
.chart-box .sub{color:var(--c-muted);font-size:12px;margin:0 0 16px}
.chart-canvas{position:relative;height:300px}
.sessions{list-style:none;margin:0;padding:0}
.sessions li{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:13px 2px;border-bottom:1px solid var(--c-border);font-size:13px}
.sessions li:last-child{border-bottom:none}
.sessions .gname{color:var(--c-text);font-weight:600}
.sessions .gdate{color:var(--c-muted)}
.sessions .gscore{font-family:var(--font-head);color:var(--c-primary);font-weight:800}
.sessions .gscore.again{color:var(--c-accent)}
.sessions .srow{display:flex;align-items:center;gap:8px}
.gdot{width:8px;height:8px;border-radius:50%;flex:none}
.empty{text-align:center;color:var(--c-muted);padding:56px 16px}
.empty .big-ico{font-size:46px;margin-bottom:12px;opacity:.6}
.empty p{font-size:15px;margin:0 0 22px}
.legend-note{color:var(--c-muted);font-size:12px;margin-top:10px;text-align:center}
.actions-row{display:flex;justify-content:center;gap:12px;margin:26px 0 8px;flex-wrap:wrap}

/* 响应式 */
@media(max-width:640px){
  .nav-inner{height:58px}
  .brand{font-size:15px;letter-spacing:.08em}
  .brand .brand-dot{width:9px;height:9px}
  .nav-links a{padding:7px 10px;font-size:13px}
  .nav-links a.active::after{left:10px;right:10px}
  .hero{padding:56px 16px 22px}
  .section{padding:46px 16px}
  .card{padding:22px}
  .sec-head h2{font-size:22px}
  .result .big{font-size:44px}
  .chart-canvas{height:240px}
}